concreteconduitdrill
I need to drill a 1 inch hole in a basement foundation block wall to pass a 1/2 emt conduit through. How do I seal the gap afterwards to pass inspection, prevent mice, insects, rain and drafts.
Keep in mind it's winter in Minnesota, so any compound needs to be able to be applied in cold conditions.
Do I simply use duct sealer or something more solid.
Void spaces are frequently used for utilities, it could be accumulated condensation. Leave it be and see if more water comes out to find out if it's an active leak. I hope you did not drill through an HVAC line or drain line.
I would try a construction glue in a caulking-gun
Random example from Internet, any product with same characteristics will do
- Waterproof: Can be used in interior or exterior applications
- Versatile: For use on wood, metal, plastic, foam, mirror, concrete and brick
I've used a similar sort of adhesive to attach small plastic signs to rough granite, with mixed success. Some lessons -
Best Answer
I'd use duct seal. I don't think mice like chewing it much, and at four feet up it's fairly safe anyway. Keep it in your pocket until you're ready to apply it.
You could also use pure silicone or urethane caulk if the masonry is dry. Both are solvent-based and should still work fine in the cold.